William cooke



(No Model.)

. W. COOKE.

STEAM BOILER.

Patented May 4, 1886.

IIIIIIIllllllllllllllllllllllllW'? UNITED STATES VPATENT OFFICE.

WILLIAM COOKE, OF ORR LAKE, ASSIGNOR TWO-THIRDS TO JOHN T. LENNOX AND.ARCHIBALD SIMPSON, OF BARRIE, ONTARIO, CANADA.

STEAM-BOILER.

SPECIFICATION forming part of Letters Patent No. 341,132, dated May 4,1886. Application fried January 22, 1886. serial no. 189,361. (Nomodel.)

:To all whom it may concern:

Be it known that I, WILLIAM Coonn, of Orr Lake, in the county of Simcoe,in the Province vof Ontario, Canada, miller, have invented an ImprovedSteam-Boiler, of which the following is a specification.

The object of the invention is to design a steam-boiler in which steamwill be generated with the least possible consumption of fuel; and itconsists, essentially, in placing over the furnace of the boiler arect-angular chamber containing a series of horizontal tubes having openends to communicate with a waterspace on each side of the chamber, andwhich is placed within an outer shell,between which and the innerchamber a suitable water-space is left. The outer shell is extendedabove the inner chamber, so as toleave a chamber above the latter forsteam. The top of the tubechamber is closed,and is provided with asuitable number of snioke-pipesto extend through the steam-chamber, sothat the smoke and heated gases passing from the furnace below the tubechamber pass through the latter,and thence through the pipes into thesmoke-stack.

Figure l is a perspective view of my improved boiler with one detachableside removed. Fig. 2 isa sectional elevation of same.

A represents the furnace.

B is a rectangular chamber containing a series of horizontal tubes, C,and placed, as indicated, immediately over the furnace A, so that thesmoke and heated gases from the furnace shall pass upwardly between allthe tubes till it reaches the top row of the latter,

'thence through the smoke-pipes D into the smoke-box E, and thence intothe smokestack F.

a is a water-space formed between the outer shell, G, and the shell ofthe tube-chamber B. This space extends down below the chamber B, andsurrounds, as indicated, the furnace A. The top of the space acommunicates with the steamspace H, which maybe made any desirable size,as the experience of the engineer constructing the boiler may suggest.The tube-chamber B is suitably stayed to the outer shell, G. The sidesof the shell G opposite to the ends of the tubes C are detachablyconnected, so that they may be readily removed for the purpose ofpermitting the tubes C to be cleaned.

In addition to securing the detachable sides I to the shell G by boltsb,I provide at suitable distances apart stay-rods d,which are eachcarried through a tube and the sides I opposite to each other, so as tobrace the latter rmly together.

As the smoke-pipes D pass through the steam-space H, the steam containedtherein is to a certain extent superheated, thereby insuring dry steamfrom my boiler.

By holding the water in a series of tubes suspended over the furnace andso arranged that the heated gases arising therefrom must, in passingout, surround the said tubes, I securea boiler which will generate steammuch more rapidly than an ordinary boiler,in which the smoke and heatedgases pass through tubes surrounded by a large body of water.

Of course I do not confine myself to any particular size of boiler, anda boiler constructed in accordance with my invention may be used forhouse-heating purposes as well as for steam-engines.

I attach importance to the plurality of smoke-pipes D passing throughthe steamspace I-I and discharging into the smokefbox E, for by thisconstruction the heatingsurface is greatly increased. I also attachimportance to the detachability of the sides I, whereby the tubes canreadily begotten at for the purpose of repairs or cleaning.

' W'hat I claim as my invention is- The combination, with the shell Gand the horizontal tubes B therein, of the detachable sides I, the boltsb,and the stay-rods ,passing through said tubes and sides, and bracingthe latter, substantially as herein shown and described.

Toronto, December 29, 1885.

WILLIAM COOKE.

In presence of- CHARLns C. BALDWIN, JAMES E. MAYBEE.

